euro rules for GB stickers

[simonm]

http://www.unece.org/fileadmin/DAM/trans...t1968e.pdf
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Annex 3
DISTINGUISHING SIGN OF MOTOR VEHICLES AND TRAILERS
IN INTERNATIONAL TRAFFIC
1. The distinguishing sign referred to in Article 37 of this Convention shall
consist of one to three letters in capital Latin characters. The letters shall
have a height of at least 0.08 m and their strokes a width of at least 0.01 m.
The letters shall be painted in black on a white ground having the shape of an
ellipse with the major axis horizontal.
2. When the distinguishing sign consists of only one letter, the major axis of
the ellipse may be vertical.
3. The distinguishing sign shall not be incorporated in the registration
number, or be affixed in such a way that it could be confused with that number or
impair its legibility.
4. On motor cycles and their trailers, the dimensions of the axes of the
ellipse shall be at least 0.175 m and 0.115 m. On other motor vehicles and their
trailers, the dimensions of the axes of the ellipse shall be at least:
(a) 0.24 m and 0.145 m if the distinguishing sign comprises three letters;
(b) 0.175 m and 0.115m if the distinguishing sign comprises less than
three letters.
5. The provisions of Annex 2, paragraph 3, shall apply to the display of the
distinguishing sign on vehicles.